101813620009 has 4 divisors (see below), whose sum is σ = 101906771716. Its totient is φ = 101720468304.

The previous prime is 101813619997. The next prime is 101813620033. The reversal of 101813620009 is 900026318101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 56701134400 + 45112485609 = 238120^2 + 212397^2 .

It is a cyclic number.

It is not a de Polignac number, because 101813620009 - 2¹⁵ = 101813587241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101813620049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46574214 + ... + 46576399.

It is an arithmetic number, because the mean of its divisors is an integer number (25476692929).

Almost surely, 2^101813620009 is an apocalyptic number.

It is an amenable number.

101813620009 is a deficient number, since it is larger than the sum of its proper divisors (93151707).

101813620009 is an equidigital number, since it uses as much as digits as its factorization.

101813620009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93151706.

The product of its (nonzero) digits is 2592, while the sum is 31.

The spelling of 101813620009 in words is "one hundred one billion, eight hundred thirteen million, six hundred twenty thousand, nine".